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Azure App Service
Azure App Service is a service used to create and deploy scalable, mission-critical web apps.
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Welcome for Azure Webapps! To elaborate on this An App always run in App Service plan and an App Service plan defines a set of compute resources for a web app to run. These compute resources are analogous to the server farm in conventional web hosting. One or more apps can be configured to run on the same computing resources (or in the same App Service plan).
To add to more App Service Plan is a container in which your web applications run, it is used to determine the resources available to your application (or applications) and their boundary. When you create an App Service plan in a certain region (for example, West Europe), a set of compute resources is created for that plan in that region. Whatever apps you put into this App Service plan run on these compute resources as defined by your App Service plan.
Each App Service plan defines:
• Region (West US, East US, etc.)
• Number of VM instances
• Size of VM instances (Small, Medium, Large)
• Pricing tier (Free, Shared, Basic, Standard, Premium, PremiumV2, PremiumV3, Isolated)
Standard and Premium ASP comes under dedicated compute. They are called dedicated because in each of these options you are running on dedicated VM’s just for you. As these VM’s are dedicated to you, you get full use of all of the resources in the VM’s and can run as many apps as you want on them. There are two directions you can go to change the pricing with these plans:
- Change plan – as you scale up the plans Basic -> Standard 1 -> Standard 2 etc. you increase the size of the VM you are running on and so get access to more resource
- Change the number of instances – you can stay on the same plan and scale out so you have more instances with the same resources, you will be charged per instance and all of your apps in the same plan will run on all instances
Your ask on Standard and Premium ASP number of app that you can host: The actual number of apps that you can host on these machines depends on the activity of the apps, the size of the machine instances, and the corresponding resource utilization.
Please Check below articles for detailed overview: